7820858498113 has 32 divisors (see below), whose sum is σ = 8615667060000. Its totient is φ = 7066178703360.

The previous prime is 7820858498077. The next prime is 7820858498119. The reversal of 7820858498113 is 3118948580287.

It can be written as a sum of positive squares in 16 ways, for example, as 2561046506929 + 5259811991184 = 1600327^2 + 2293428^2 .

It is a cyclic number.

It is not a de Polignac number, because 7820858498113 - 2¹⁷ = 7820858367041 is a prime.

It is a super-2 number, since 2×7820858498113² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7820858498119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677183463 + ... + 677195011.

It is an arithmetic number, because the mean of its divisors is an integer number (269239595625).

Almost surely, 2^{7820858498113} is an apocalyptic number.

It is an amenable number.

7820858498113 is a deficient number, since it is larger than the sum of its proper divisors (794808561887).

7820858498113 is a wasteful number, since it uses less digits than its factorization.

7820858498113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19365.

The product of its (nonzero) digits is 30965760, while the sum is 64.

The spelling of 7820858498113 in words is "seven trillion, eight hundred twenty billion, eight hundred fifty-eight million, four hundred ninety-eight thousand, one hundred thirteen".